Quasistatic analysis of microstrip lines on lossy inhomogeneous substrates

Author

Kiang, J.-F.

Author_Institution

Dept. of Electr. Eng., Nat. Chung-Hsing Univ., Taichung, Taiwan

Volume

143

Issue

5

fYear

1996

fDate

10/1/1996 12:00:00 AM

Firstpage

379

Lastpage

384

Abstract

The propagation constant of microstrip lines on a lossy inhomogeneous substrate is analysed by using a mode-matching technique and the Galerkin method. Poisson´s equation with a complex permittivity is derived based on the electroquasistatic approximation. Eigenmodes in each inhomogeneous layer are obtained by solving the Poisson equation. Next, a mode-matching technique is applied to derive Green´s function for a line charge in the lossy inhomogeneous layered medium. The Galerkin method is then applied to calculate the capacitance and conductance matrices of microstrip lines embedded in such a medium. Both single and coupled microstrip lines are analysed

Keywords

Galerkin method; Green´s function methods; capacitance; eigenvalues and eigenfunctions; electrostatics; microstrip lines; mode matching; transmission line matrix methods; waveguide theory; Galerkin method; Poisson´s equation; capacitance; complex permittivity; conductance matrice; coupled microstrip lines; eigenmodes; electroquasistatic approximation; inhomogeneous layer; line charge; lossy inhomogeneous substrates; mode-matching; propagation constant; quasistatic analysis; single microstrip lines;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19960504

Filename

553645